Transparent gel with an extra slim design is discreetly hidden when worn in open shoes. The ultra-thin design doesn't crowd toes while still cushioning the ball of the foot from pressure. Non-slip design ensures that your feet & insole stay firmly in place.Suitable for shoes sizes UK: 3-7.5 AUS: 4-8 EUR: 35-40.5 Designed & assessed in consultation with foot care specialists.